bandyandstrange

i am just about to attempt spark plug renewall on my 95 wrx jap import can any one tell me waht the gap should be i have ngk pfr 7b to fit
thanks mark

Danny Fisher

.8mm gap.

Dan

redwrx

Ive got pfr 6b 1.1mm in my 93 wrx are these the wrong plugs for the job???

Bob Rawle

Gap is best at 0.7mm, the '6's will be "ok" but gapping at 1.1mm is completely wrong, PFR6G's are gapped at 1.1 but since the older cars suffer from coil pack problems then the PFR7B's (or 6's) gapped to 0.7mm provide for the best result in my experience.

Later cars can be gapped at 0.8mm if the elctrics are "clean" like Danny's.

bandyandstrange

yes i agree gapped my pfr 7b at 0.7mm car runs really well car although coil packs are breaking up at the end 100 % improvement used to run real rough on plugs supplied by my dealer in holland they were the denso type pk20pr-p8 my 95 jappy wrx ran like a pig on these misfiring hesitation etc wrong plug for the import i think

caz1562

agree with Bob, 0.7mm gap